Hi,
I've just encountered a hard disk crash in one of my btrfs pools.
sudo btrfs filesystem show
failed to open /dev/sr0: No medium found
Label: none uuid: 545e95c6-d347-4a8c-8a49-38b9f9cb9add
Total devices 3 FS bytes used 112.70GB
devid 1 size 100.61GB used 89.26GB path /dev/sdc6
devid 2 size 93.13GB used 84.00GB path /dev/sdc1
*** Some devices missing
The device which is missing is /dev/sdb. I have replaced it with a new
hard disk. How do I add it back to the volume and fix the device
missing?
The pool is expected to mount to /samples (it is not mounted yet).
I tried this - which fails:
sudo btrfs device add /dev/sdb /samples
ERROR: error adding the device '/dev/sdb' - Inappropriate ioctl for device
Why isn't this working?
I also tried this:
sudo mount -o recovery /dev/sdc1 /samples
mount: wrong fs type, bad option, bad superblock on /dev/sdc1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
same with /dev/sdc6
I ran btrfsck --repair on /dev/sdc1 and /dev/sdc6. Apart that it
reports a device is missing (/dev/sdb) seems okay.
I also tried:
sudo btrfs filesystem df /samples
ERROR: couldn't get space info on '/samples' - Inappropriate ioctl for device
and as I'm supposed to have a snapshot, this (but I suppose it's
helpless as the volume isn't mounted)
btrfs subvolume snapshot /samples/malwareSnapshot /before
ERROR: error accessing '/samples/malwareSnapshot'
Please help me out, thanks
Axelle.
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